背景:这项研究的目的是评估埃及人群中上颌恒磨牙的根数和根管形态。
方法:本研究纳入了6157例病例。由2名牙髓病医师评估了锥形束计算机断层扫描的数字化图像。根据Vertucci列出了根数和根管构型。年龄,性别,并计算了双边分布差异。
结果:所有上颌第一磨牙均显示3根构型,而上颌第二磨牙显示3-,2-,和单根配置。对于上颌第一磨牙,最常见的Vertucci分类为II型(2-1,45.6%),IV型(2-2,27.27%),和I型(1,25.45%)。对于上颌第二磨牙,最常见的Vertucci分类为II型(2-1,47.1%),I型(1,42.06%),和IV型(2-2,8.03%)。统计上,第二近颊管的患病率不受任何性别的影响,牙齿位置(右侧或左侧),或年龄。
结论:在本研究条件下,埃及人的根管构型表明,上颌第一磨牙的近颊根最常见的Vertucci分类是II型(2-1),IV型(2-2),I型(1)对于上颌第二磨牙,最常见的类型是II型(2-1),I型(1),和IV型(2-2)。使用锥形束计算机断层扫描数字成像对牙髓病例进行预评估可提供更好的根管形态信息,这可能会改善病例的管理和预后。
BACKGROUND: The purpose of this study was to evaluate the number of roots and canal morphology of maxillary permanent molars in an Egyptian population.
METHODS: Six hundred fifty-seven cases were included in this study. Digitized images from cone-beam computed tomographic scanning were assessed by 2 endodontists. The number of roots and canal configuration according to Vertucci were tabulated. Age, sex, and bilateral distribution differences were calculated.
RESULTS: All maxillary first molars showed 3-root configuration, whereas maxillary second molars showed 3-, 2-, and single-root configurations. For maxillary first molars, the most common Vertucci classifications for the mesiobuccal root were type II (2-1, 45.6%), type IV (2-2, 27.27%), and type I (1, 25.45%). For maxillary second molars, the most common Vertucci classifications for the mesiobuccal root were type II (2-1, 47.1%), type I (1, 42.06%), and type IV (2-2, 8.03%). The prevalence of a second mesiobuccal canal is statistically not affected by either sex, tooth position (right or left side), or age.
CONCLUSIONS: Under the conditions of this study, the root canal configurations of an Egyptian population showed that the most common Vertucci classifications for the mesiobuccal root for maxillary first molars were type II (2-1), type IV (2-2), and type I (1). For maxillary second molars, the most common types were type II (2-1), type I (1), and type IV (2-2). Pre-evaluation of the endodontic case using cone-beam computed tomographic digital imaging provides better information of root canal morphology, which might improve the management and prognosis of the case.